Electrochemistry Class 12 | Chemistry | Full Revision in 30 Minutes | JEE | NEET | BOARDS | CUET

Bharat Panchal - Chemistry Guruji 2.0・2 minutes read

The video provides a comprehensive 30-minute revision of the Electro Chemistry chapter, covering electrolytes, conductors, electrode potential, resistivity, Faraday's laws, and more for immediate topic recall. It emphasizes the importance of understanding key concepts such as conductivity variation with temperature and the impact of concentration on molar conductivity.

Insights

  • The video provides a comprehensive and rapid revision of Electro Chemistry, covering topics like electrolytes, conductors, electrode potential, Faraday's laws, and more for a thorough understanding.
  • Concepts such as resistivity, molar conductivity, and limiting conductivity are explained, highlighting the relationship between conductivity and concentration, essential for grasping the principles of electrochemical reactions and electrolysis.

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  • What is the focus of the video?

    Electro Chemistry chapter revision

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Summary

00:00

"Electro Chemistry Revision: Rapid Recall Techniques"

  • The video focuses on a 30-minute revision of the Electro Chemistry chapter, emphasizing its importance and scoring potential.
  • The content promises a rapid revision of the entire chapter, aiding in immediate topic recall.
  • Detailed explanations and related questions are provided in a one-shot video for comprehensive understanding.
  • Short notes on complete chemistry, previous year questions, and NCERT exam details are shared for additional support.
  • Electrolytes like urea and glucose are discussed, distinguishing between strong electrolytes and those with less dissociation.
  • Conductors are categorized into metallic and electrolytic types based on their ability to allow current flow.
  • Factors affecting electrolytic conductors include the nature of the electrolyte, solvent, solvent attraction, and temperature.
  • The concept of metallic conductors and their conductivity variation with temperature is explained.
  • Electrochemical cells and electrolytic cells are differentiated based on their conversion of electrical and chemical energy.
  • Electrode potential, oxidation potential, and reduction potential are explored, along with the creation of the electrochemical series.

13:27

Ionic Concentration, Energy Calculation, Conductivity Relationships Explained

  • Concentration of ionic form is 0.001, which can be expressed as a power of 10 for simplicity.
  • Calculation results in 2.68 for energy determination.
  • Formula for Delta G and standard student energy are discussed.
  • Faraday's constant and cell potential are set at 1.1.
  • Resistance is defined as an obstruction to electric current flow, directly proportional to length and inversely proportional to cross-sectional area.
  • Resistivity is inversely related to conductivity, with the formula kappa = 1/R.
  • Molar conductivity is the conductivity of all ions produced by one mole of an electrolyte compound.
  • Conductivity and molar conductivity vary with concentration, with conductivity increasing with dilution.
  • Limiting conductivity is the molar conductivity of an electrolyte in an infinite solution.
  • Faraday's laws relate the mass of substance deposited during electrolysis to the charge passed and equivalent weight of the substance.

30:37

Chemical Reactions and Protective Coatings in Metals

  • Oxygen reacts with both nickel platinum and carbon to convert it into gas, using a catalyst to speed up the reaction. Atmospheric silver turns black due to silver sulphide formation, copper turns green due to copper hydroxide formation, and iron rusts with a rust formula of Fe2O3. Implementing protective coatings can prevent deterioration, especially in the electrochemical series where more active elements react faster and spoil quicker. Conduct a 30-minute revision on the next chapter and consider the impact of increasing temperature on the conductivity of metallic conductors.
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